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Subwoofers in phase or out? a quick question

Posted by mattcecil1@yahoo.com (A) on March 28, 2007 at 11:02:30

I'm close to dialing in a pair of powered subs & have a question regarding the Phase of the subs.

Both subs are about 5' behind my speakers, in the corners of the room, directly behind the speakers. To me they sound great in this location, much more of a 3-d effect and the subs disappear. With the subs just behind the speakers the performance was OK...but i like the corner spots best.

They have been in this location for about a week, and the subs are a month old. last night i flipped the phase from 0 degrees to 180 degrees and a big, big change occurred. the subs completely disappeared, the bass output seems to be less YET the 3-D effect is huge now. imaging, separation & the scary airy effect is REALLY wild now.

from what i've read, setting the subs out of phase is important if the listener or the speaks are far from the subs. Is 5' away considered far? from my chair the speakers are 10' from me & the subs are about 15' away.

and, is what i'm hearing when i go from 0 to 180 what is supposed to happen?

With them at 180 i get the feeling like more deep bass should be present...but the overall effect is much more interesting this way. The chest thumping went way down, but the imaging improved 10 fold.

With them at 0 degrees, they sound like subs i've had before. With them @ 180, its really wild but NOT in a party boom-boom way. Its a musical/audiophile 'come see the symphony in my L/R' effect.

With the subs @ 180 degrees, there is NO center image. everything & everyone has its own spot on stage. With them at 0 degrees, the lead singer is almost always directly in front of me. Not knowing squat, i've always figured there shouldn't be a direct center musician...but until last night I had not heard a presentation like this.

sorry for the babble, hard to explain this stuff sometimes...

matt

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